Convert Kilometer to Twip
Convert kilometers to twips instantly. 1 kilometer = 5.669291e+7 twip — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Twip to Kilometer converter for the reverse conversion.
Units explained
Kilometer
A kilometer is a metric unit of length equal to one thousand meters. It is the standard unit for measuring road distances, geographic distances, and other large-scale measurements in metric countries.
The kilometer was defined alongside the meter in 1795 using the standard SI prefix kilo- (from Greek chilioi, "thousand"), denoting one thousand units.
Kilometers are used worldwide (except the United States and a few others) for road signage, geographic distance, athletic events, and scientific distances at planetary scale. Speed limits in most countries are given in km/h.
Adopted 1795 in France as part of the original metric system; the kilometer became the global standard for road and geographic distance through the 19th and 20th century metric adoption.
Twip
A twip is a typographic unit equal to 1/1440 of an inch (about 17.64 µm). It is used in legacy Microsoft Windows graphics APIs and PostScript typography.
The name twip is a contraction of 'twentieth of a point' (point being 1/72 inch). Adopted in Microsoft's GDI and OLE specifications for screen-resolution-independent measurement.
Twips appear in Visual Basic, legacy Windows API code, and some PostScript-derived typesetting systems. They allow whole-number arithmetic at sub-pixel precision for typographic layout.
Adopted by Microsoft in the 1980s for screen-typography APIs; remains in use in legacy Windows GDI and Visual Basic code.
Kilometer to Twip conversion formula
The relationship between kilometers and twips:
To convert kilometers to twips, multiply the value in kilometers by 5.669291e+7. To reverse, multiply twips by 1.763889e-8.
How to use this converter
Type a value into the calculator. The result in twips updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Twip to Kilometer converter for the reverse direction.
Step-by-step: convert kilometers to twips
- Write down the value in kilometers (km).
- Multiply that value by the factor 5.669291e+7.
- The product is the equivalent value in twips (twip).
- To reverse, multiply the twip value by 1.763889e-8.
Worked examples
Example 1 — Convert 1 km to twip:
1 × 5.669291e+7 = 5.669291e+7 twip
Example 2 — Convert 100 km to twip:
100 × 5.669291e+7 = 5.669291e+9 twip
Real-world example — Long-haul to feature-scale
One kilometer equals one billion twips — useful in fiber-optic engineering, where total cable length is given in the larger unit but feature-level attenuation depends on micro-scale variations.
1 km × 5.669291e+7 = 5.669291e+7 twip
Real-world example — Geographic to fiber-optic scale
One kilometer equals one billion twips. This conversion appears in fiber-optic specifications, where total link length is given in kilometers but signal attenuation depends on micro-scale variations along the fiber.
1 km × 5.669291e+7 = 5.669291e+7 twip
Kilometer to Twip conversion table
Standard reference values for converting kilometers to twips:
| Kilometer [km] | Twip [twip] |
|---|---|
| 0.01 | 566929.1338582641 |
| 0.1 | 5669291.3385826414 |
| 1 | 5.669291e+7 |
| 2 | 1.133858e+8 |
| 3 | 1.700787e+8 |
| 4 | 2.267717e+8 |
| 5 | 2.834646e+8 |
| 10 | 5.669291e+8 |
| 20 | 1.133858e+9 |
| 30 | 1.700787e+9 |
| 40 | 2.267717e+9 |
| 50 | 2.834646e+9 |
| 100 | 5.669291e+9 |
| 500 | 2.834646e+10 |
| 1000 | 5.669291e+10 |
Frequently asked questions
How many twips is 1 kilometer?
How do I convert kilometers to twips?
How do I convert twips back to kilometers?
How many twips is 100 kilometers?
Popular length unit conversions
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Metric / SI (17 units)
Imperial / US Customary (27 units)
Nautical (1 units)
Astronomical (9 units)
Atomic / Physics (6 units)
Typographic (3 units)
Sources & references
Conversion factor (1 km = 5.669291e+7 twip) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.